Q1 find the
product
using
suitable
properties.
267*1007
b 854 * 102
c 258 * 1008
d 109 * 38
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1
Answer:
Find the product using suitable properties: (a) 738 x 103 (b) 854 x102 (c) 258 x 1008 (d) 1005 x168
(a) 738 × 103
= 738 × (100 +3)
= 738 × 100 + 738 × 3
= 73800 + 2214
= 76014
(b) 854 × 102
= 854 × (100 +2)
= 854 × 100 + 854 × 2
= 85400 +1708
=87108
(c) 258 × 1008
= 258 × (1000 +8)
= 258 × 1000 + 258 × 8
= 258000 + 2064
= 260064
(d) 1005 × 168
= (1000 + 5) × 168
= 1000 × 168 + 5 × 168
= 168000 +840
=168840
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